Roof carrier for Teocali

Hi guys,
So I've got a 2010 Teocali and I discovered that my new Mont Blanc roof carrier (the type that you leave the wheels on and the arm clamps onto the downtube) won't fit it as the clamping arm isn't long enough to reach the Goose's high downtube.

Before I look into fork-clamp options, I thought I'd see if any Teocali owners have found another brand of roof-carrier that does work, cause I'm much more keen to not have to take the wheel on/off (plus I'll be switching between 9mm QR and 15mm TA bikes regularly)